CN110374859A - A kind of inner circulating air pump life detecting device and method - Google Patents
A kind of inner circulating air pump life detecting device and method Download PDFInfo
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- CN110374859A CN110374859A CN201910691591.4A CN201910691591A CN110374859A CN 110374859 A CN110374859 A CN 110374859A CN 201910691591 A CN201910691591 A CN 201910691591A CN 110374859 A CN110374859 A CN 110374859A
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- air
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- inner circulating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses a kind of inner circulating air pump life detecting device and methods, belong to fluid pressure actuator technical field, it includes distributing valve, distributing valve has air inlet, gas outlet and air spring mouth, inner circulating air pump has the first gas nozzle, second gas nozzle and the motor for driving pump work, air inlet passes through first the second gas nozzle of air circuit connection, first pressure sensor is set in first gas circuit, second pressure sensor is set in air spring mouth, gas outlet passes through the second air circuit connection air accumulator, third pressure sensor is set in the second gas circuit, 4th pressure sensor is set in air accumulator.Can this device be greater than load by monitoring its final outlet pressure, and during monitoring the parameters such as electric current, voltage whether still in its nominal value range, judge whether inner circulating air pump works normally, and add up embodiment item of the number of its normal work as its service life length of judgement, to be automatically performed the objective detection of the consistency in inner circulating air pump work service life.
Description
Technical field
The invention belongs to fluid pressure actuator technical fields, and in particular to a kind of inner circulating air pump life tests dress
It sets and method.
Background technique
With the development of auto industry technology, in order to enhance the comfort and stationarity in vehicle travel process, air is outstanding
Frame system is widely applied.It buffers the vibration from wheel using air spring, and adjusts air in real time according to road conditions
The tolerance of spring changes the height of air spring according to this, achievees the purpose that height of the carbody is stable.
In practical applications, by the charge and discharge gaseity of electromagnetism Vavle switching air spring.When air spring needs to increase, electricity
Magnet valve opens it and inflates branch, and after air pump sucks outside air, pressurization indentation air spring completes gas replenishment process；Work as air
When spring needs to reduce, then solenoid valve opens its deflating valve, and portion gas is arranged into atmosphere.In the above process, it is vented space-time
Partial high pressure gas is directly discharged into atmosphere by gas spring, and when inflation needs air pump to pressurize again again the atmosphere of sucking, this
The working strength of air pump is increased to a certain extent, extends the working time, has both affected relaxing for vehicle to a certain extent
Adaptive, and cause energy waste.
Then, applicant has developed a inner circulating air pump, and the gas of air spring discharge can be stored by air accumulator,
Then the repressurization gas inflates air spring, so that discharge gas is isolated with atmosphere, between air accumulator and air spring
Circulation completes the inflation/deflation of air spring.After producing inner circulating air pump, need to carry out life tests to it, with
The performance and service life situation of inner circulating air pump are understood, therefore, it is determined that whether it can be really effectively outstanding for the air of vehicle
Frame system service.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of inner circulating air pump life detecting device and methods, can
The working life pumped automatically by each parameter detecting inner circulating air.
In order to solve the above technical problems, the technical scheme is that designing a kind of inner circulating air pump life tests dress
It sets, including power supply device, controller and air accumulator, it is characterised in that:
It further include distributing valve, distributing valve has air inlet, gas outlet and air spring mouth, is equipped with OUT valve, air in gas outlet
RR valve is installed in spring mouth；Inner circulating air pump has the first gas nozzle, the second gas nozzle and the motor for driving pump work, motor
Electric power loop in current sensor and voltage sensor are set, the first solenoid valve is set in the first gas nozzle, is set in the second gas nozzle
Set second solenoid valve；
Air inlet passes through first the second gas nozzle of air circuit connection, and first pressure sensor is arranged in the first gas circuit,
Second pressure sensor is set in air spring mouth,
Third pressure sensor is arranged by the second air circuit connection air accumulator in gas outlet in the second gas circuit, the is arranged in air accumulator
Four pressure sensors,
Power supply device provides working power for the first solenoid valve, second solenoid valve, distributing valve and motor；
Program in controller comprises the following modules:
(1) parameter setting module: receiving the regular time parameter setting value of T1, T2 and T3, sets work times initial value and mesh
Scale value, setting first pressure P1, second pressure P2, third pressure P3, electric current I and voltage in the 4th pressure P4 and electric motor loop
The respective critical field of U, and each set information is sent to memory module, work times initial value is 0；
(2) detection module: first pressure sensor, second pressure sensor, third pressure sensor and the 4th pressure are received and is passed
The detection information of operating current and operating voltage in sensor and electric motor loop, and each detection information is passed into logic control mould
Block；
(3) timing module: after the start timing signal for receiving Logic control module, accordingly start the timing to T1, T2 and T3
It calculates, timing notifies the signal to Logic control module after；
(4) Logic control module: receiving the detection information of detection module, is issued according to detection information to timing module and is determined accordingly
When enabling signal, control signal is issued after the signal that arrives of timing for receiving timing module return, also judge that first presses
Whether electric current I and voltage U is in respective mark in power P1, second pressure P2, third pressure P3, the 4th pressure P4 and electric motor loop
In quasi- range, if stored in respective critical field, after work times+1 into memory module, and judge after calculating
Whether work times reach target value, enter if not up to and detect work next time, and circulation in this is completed if reaching
The life tests of air pump；If there is beyond critical field where it, then completing the life tests of this inner circulating air pump；
(5) memory module: the work times information in information and Logic control module that storage parameter setting module is sent；
(6) output module: the control signal of Logic control module is exported.
Further, the program in controller further includes display module, for show detection module each detection information and
Work times information in Logic control module.
Further, the critical field of first pressure P1 is not less than 200psi, and the critical field of second pressure P2 is not
Lower than 200psi, the critical field of third pressure P3 be not less than 175psi, the critical field of the 4th pressure P4 be not less than
175psi；The critical field of electric current I is less than 30A, and the critical field of voltage U is no more than 12V.
Further, work times target value is 10000.
Further, the timing of T1 is 5 seconds, the timing of T2 is 15 seconds and the timing of T3 is 10 seconds.
Further, pressure release electromagnetic valve, inspection of the monitoring control devices to the 4th pressure sensor are additionally provided on the air accumulator
Survey signal when reaching 180psi control pressure release electromagnetic valve obtain it is electric, lower than 180psi when then control pressure release electromagnetic valve power-off.
The present invention also provides a kind of method using the above-mentioned apparatus detection inner circulating air pump service life, interior circulation to be measured is empty
Air pump has the first gas nozzle, the second gas nozzle and the motor for driving pump work, and the first solenoid valve, the second gas is arranged in the first gas nozzle
Second solenoid valve is set in mouth, it is characterised in that: the second gas nozzle passes through the air inlet of the first air circuit connection distributing valve, distributing valve
Gas outlet by the second air circuit connection air accumulator, detecting step is as follows:
(1) compressed air is inputted into air accumulator, after the pressure P4 in air accumulator reaches 175psi, carries out following formal inspection
Survey step；
(2) after control motor and second solenoid valve obtain electricity operation time T1, the air outlet valve and air spring valve in distributing valve are controlled
Electricity operation T2, then detect air pressure P1 in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve, in the second gas circuit
The electric current I and voltage U in air pressure P4, electric motor loop in air pressure P3, air accumulator, is then shut off motor, second solenoid valve, outlet
The power supply of valve and air spring valve connects the power supply of the first solenoid valve；
(3) judge air pressure P1 in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve, the air pressure P3 in the second gas circuit,
Electric current I in air pressure P4, electric motor loop and voltage U in air accumulator whether in respective critical field,
If this time working properly, work times+1, judge that the work times after calculating are in respective critical field
No to reach targeted number, if having reached targeted number, the life tests of inner circulating air pump terminate；If not up to mesh
Number is marked, then closes the first solenoid valve after the first solenoid valve obtains electric T3, repeats step (2)~(3)；
If there is in its critical field, then this task is not abnormal, and work times are constant, inner circulating air pump
Life tests terminate.
Further, further include the steps that controlling air accumulator pressure release in formal detecting step, monitor the gas in air accumulator
After pressure P4 is more than 180 psi, then the pressure release electromagnetic valve that opening is arranged on air accumulator then closes pressure release after P4 is down to 180psi
Solenoid valve.
Further, the critical field of first pressure P1 is not less than 200psi, and the critical field of second pressure P2 is not
Lower than 200psi, the critical field of third pressure P3 be not less than 175psi, the critical field of the 4th pressure P4 be not less than
175psi；The critical field of electric current I is less than 30A, and the critical field of voltage U is no more than 12V.
Further, work times target value be 10000, T1 timing be 5 seconds, the timing of T2 be 15 seconds and
The timing of T3 is 10 seconds.
Further, the specific structure of inner circulating air pump is shown in Chinese invention patent application 201910453802.0, herein
No longer it is specifically described.
Compared with prior art, the beneficial effects of the present invention are:
1, it is final out to monitor it for the load that the present invention is pumped by the air accumulator filled with compressed gas as inner circulating air to be measured
Can atmospheric pressure be greater than load, and whether the parameters such as electric current, voltage are sentenced still in its nominal value range during monitoring
Whether disconnected inner circulating air pump works normally, and adds up embodiment item of the number of its normal work as its service life length of judgement,
To be automatically performed the inner circulating air pump work service life consistency objective detection, be inner circulating air pump preferably be air
Suspension system service lays the foundation.
2, the control using the controller with specific function program as entire detection process and policymaker, Neng Gouyou
Effect, the testing result for objectively showing solenoid valve, so that examination criteria single transparent, convenient for manipulation.
3, due to inner circulating air pump every work it is primary after, by connecting the working power of the first solenoid valve for a period of time,
So that the high pressure chest of inner circulating air pump connects ambient atmosphere, normal pressure state is reverted to, it will be unified to same at the beginning of its every task
One state improves the justice detected every time.
4, the present invention can greatly improve the detection quality and efficiency of inner circulating air pump, and the reality for inner circulating air pump is answered
With the advantageous functional reliability foundation of offer.
Detailed description of the invention
Fig. 1 is the connection block diagram of detection device in the present invention；
Fig. 2 is the flow chart of installation procedure in controller；
Fig. 3 is the subroutine flow chart for controlling air accumulator air pressure.
Marked in the figure: 1, inner circulating air pumps；2, first pressure sensor；3, distributing valve；4, third pressure sensor；5,
Air accumulator；6, the 4th pressure sensor；7, second pressure sensor；8, power supply device；9, current sensor；10, voltage sensor
Device；11, the first gas nozzle；12, the second gas nozzle；13, pressure release electromagnetic valve.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Whole detection method of the invention are as follows:
(1) compressed air is inputted into air accumulator 5, after the pressure P4 in air accumulator 5 reaches 175psi, carried out following formal
Detecting step；
(2) after control motor and second solenoid valve obtain electricity operation time T1, the air outlet valve and air spring valve in distributing valve 3 are controlled
Electricity operation T2, the air spring mouth for then detecting air pressure P1 in the first gas circuit, connecting off hind wheel air spring in distributing valve 3
Air pressure P2, the air pressure P3 in the second gas circuit, the air pressure P4 in air accumulator 5, electric current I and voltage U in electric motor loop, then close
The power supply of motor, second solenoid valve, air outlet valve and air spring valve is closed, the power supply of the first solenoid valve is connected；
(3) judge air pressure P1 in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve 3, the air pressure P3 in the second gas circuit,
Electric current I in air pressure P4, electric motor loop and voltage U in air accumulator 5 whether in respective critical field,
If this time working properly, work times+1, judge that the work times after calculating are in respective critical field
No to reach targeted number, if having reached targeted number, the life tests of inner circulating air pump 1 terminate；If not up to
Targeted number then closes the first solenoid valve after the first solenoid valve obtains electric T3, repeats step (2)~(3)；
If there is in its critical field, then this task is not abnormal, and work times are constant, inner circulating air pump 1
Life tests terminate.
Further, further include the steps that controlling 5 pressure release of air accumulator in formal detecting step, monitor in air accumulator 5
After air pressure P4 reaches 180 psi, then the pressure release electromagnetic valve 13 being arranged on air accumulator 5 is opened, is then closed after P4 is down to 180psi
Close pressure release electromagnetic valve 13.
Further, the critical field of first pressure P1 is not less than 200psi, and the critical field of second pressure P2 is not
Lower than 200psi, the critical field of third pressure P3 be not less than 175psi, the critical field of the 4th pressure P4 be not less than
175psi；The critical field of electric current I is less than 30A, and the critical field of voltage U is no more than 12V.
Further, work times target value be 10000, T1 timing be 5 seconds, the timing of T2 be 15 seconds and
The timing of T3 is 10 seconds.
As shown in Figure 1, distributing valve 3 used has air inlet, gas outlet and the sky for connecting air spring in the present invention
Gas spring mouth, wherein gas outlet is equipped with OUT valve, and the quantity of air spring mouth is four, is connected respectively four vehicles of vehicle
The air spring of wheel, the location fix of the air spring connected according to it in the car, successively in four air spring mouths
RR valve, LR valve, RF valve, LF valve are installed.The specific structure of inner circulating air pump 1 to be measured is shown in Chinese invention patent application
201910453802.0 since its concrete mechanism can come forth, therefore no longer specifically repeating herein.It has the first gas nozzle 11, the
Two gas nozzles 12 and the motor for driving pump work, 9 He of current sensor of setting detection current information in the electric power loop of motor
The voltage sensor 10 of information of voltage is detected, the first solenoid valve is set in the first gas nozzle 11, the second electricity of setting in the second gas nozzle 12
Magnet valve.The air inlet of distributing valve 3 passes through first the second gas nozzle of air circuit connection 12, and first pressure sensor 2 is arranged in the first gas circuit.
It is connection air spring in practical applications since there are four the connectors of connection air spring for the tool of distributing valve 3,
It is simplied system structure and thrifty device resource, this detection device is only to connect off hind wheel air spring for air spring inflation
Air spring mouth be detection sample, on the air spring mouth where RR valve be provided with second pressure sensor 7.Distributing valve 3
Air inlet by first the second gas nozzle of air circuit connection 12, gas outlet by the second air circuit connection air accumulator 5, set in the first gas circuit
First pressure sensor 2 is set, third pressure sensor 4 is set in second gas circuit, the 4th pressure sensor 6 is set in air accumulator 5,
Pressure release electromagnetic valve 13 is additionally provided on air accumulator 5.It is the first solenoid valve, second solenoid valve, distributing valve 3 and motor by power supply device 8
Working power is provided.
Control and the logic judging function of entire detection process are completed by controller, function is by specific programming system this moment
It completes, which includes following functions module:
(1) parameter setting module: receiving the regular time parameter setting value of T1 5 seconds, the regular time parameter setting value of T2 15 seconds,
The regular time parameter setting value of T3 10 seconds；Work times initial value 0 and target value 10000 are received, setting first pressure P1's
Critical field is not less than 200 psi, and the critical field of second pressure P2 is not less than 200 psi, the standard of third pressure P3
Range is not less than 175 psi, and the critical field of the 4th pressure P4 is the electric current I standard model in electric motor loop not less than 175 psi
Enclosing for the critical field less than 30A, voltage U is to be sent to memory module no more than 12V, and by each set information；
(2) detection module: receiving the pressure signal P 1 that first pressure sensor 2 detects, what second pressure sensor 7 detected
Pressure signal P 2, the pressure signal P 3 that third pressure sensor 4 detects, the pressure signal that the 4th pressure sensor 6 detects
In the electric motor loop that operating current I and voltage sensor 10 detect in the electric motor loop that P4 and current sensor 9 detect
Operating voltage U, and above-mentioned each detection information is passed into Logic control module；
(3) timing module: after the start timing signal for receiving Logic control module, accordingly start to count T1, T2 and T3
When calculate, timing notifies the signal to Logic control module after；
(4) Logic control module: receiving the detection information of detection module, is issued according to detection information to timing module and is determined accordingly
When enabling signal, control signal is issued after the signal that arrives of timing for receiving timing module return, also judge that first presses
Whether electric current I and voltage U is in respective mark in power P1, second pressure P2, third pressure P3, the 4th pressure P4 and electric motor loop
In quasi- range, if stored in respective critical field, after work times+1 into memory module, and judge after calculating
Whether work times reach target value, enter if not up to and detect work next time, and circulation in this is completed if reaching
The life tests of air pump 1；If there is beyond critical field where it, then completing the life tests of this inner circulating air pump 1；
When the detection signal for monitoring the 4th pressure sensor 6 reaches 180psi, obtained to output module sending pressure release electromagnetic valve 13 electric
Control signal, after issue pressure release electromagnetic valve 13 after electric control signal, monitor the detection signal of the 4th pressure sensor 6
When lower than 180psi, then the control signal that pressure release electromagnetic valve 13 powers off is issued to output module；
(5) memory module: the work times information in information and Logic control module that storage parameter setting module is sent；
(6) output module: the control signal of Logic control module is exported；
(7) display module: the work times information in each detection information and Logic control module for showing detection module.
As shown in Fig. 2, detecting step of the invention is as follows:
(1) compressed air is inputted into air accumulator 5, when the 4th pressure sensor 6 monitors that the pressure P4 in air accumulator 5 reaches
After 175psi, into following formal detecting step；
(2) Logic control module issues the control signal of motor and second solenoid valve to output module, while sending out to timing module
T1 start timing signal out, timing module start to carry out timing to T1, and after T1 timing time to after 5 seconds, timing module will timing
Time is sent to Logic control module to signal, after Logic control module receives the signal, issues distributing valve 3 to output module
In OUT valve and RR valve obtain the control signal of electricity operation, output module exports the control instruction, so that OUT valve and RR valve obtain
Electricity operation, while Logic control module issues T2 start timing signal to timing module, timing module starts to carry out timing to T2,
After T2 timing time to after 15 seconds, timing to signal is sent to Logic control module, Logic control module by timing module
After receiving the signal, read air pressure P1 in detection module in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve 3,
Then the air pressure P4 in air pressure P3, air accumulator 5 in second gas circuit, the electric current I and voltage U in electric motor loop are issued and are closed electricity
Machine, second solenoid valve, OUT valve and RR valve power supply control signal, also issue connect the first power of electromagnetic valve control signal, it is defeated
Out module will control signal output so that motor, second solenoid valve, OUT valve and RR valve power-off, the first solenoid valve obtain it is electric, and to
Timing module issues T3 start timing signal, and timing module starts to carry out timing to T3；
(3) Logic control module judge air pressure P1 in the first gas circuit, in distributing valve 3 air spring mouth air pressure P2, the second gas
Whether the air pressure P4 in air pressure P3, air accumulator 5, the electric current I in electric motor loop and the voltage U in road are in respective critical field
It is interior,
If this time working properly, work times+1, judge that the work times after calculating are in respective critical field
No to reach targeted number, if having reached targeted number, the life tests of inner circulating air pump 1 terminate；If not up to
Targeted number, then after T3 timing time to after 10 seconds, timing is sent to Logic control module to signal by timing module, is patrolled
After volume control module receives the timing to signal, the control signal for closing the first solenoid valve is issued to output module, it is defeated
Module exports the control signal out, closes the first solenoid valve, then repeatedly step (2)~(3)；
If there is in its critical field, then this task is not abnormal, and work times are constant, inner circulating air pump 1
Life tests terminate.
As shown in figure 3, in above-mentioned formal detecting step, when Logic control module monitors the air pressure P4 in air accumulator 5
After reaching 180 psi, then the control signal for opening the pressure release electromagnetic valve 13 being arranged on air accumulator 5 is issued to output module, is beaten
Open pressure release electromagnetic valve 13；Then issue the control letter for closing pressure release electromagnetic valve 13 to output module after P4 is down to 180psi after
Number, close pressure release electromagnetic valve 13.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of inner circulating air pumps life detecting device, including power supply device, controller and air accumulator, it is characterised in that:
It further include distributing valve, distributing valve has air inlet, gas outlet and air spring mouth, is equipped with OUT valve, air in gas outlet
RR valve is installed in spring mouth；Inner circulating air pump has the first gas nozzle, the second gas nozzle and the motor for driving pump work, motor
Electric power loop in current sensor and voltage sensor are set, the first solenoid valve is set in the first gas nozzle, is set in the second gas nozzle
Set second solenoid valve；
Air inlet passes through first the second gas nozzle of air circuit connection, and first pressure sensor is arranged in the first gas circuit,
Second pressure sensor is set in air spring mouth,
Third pressure sensor is arranged by the second air circuit connection air accumulator in gas outlet in the second gas circuit, the is arranged in air accumulator
Four pressure sensors,
Power supply device provides working power for the first solenoid valve, second solenoid valve, distributing valve and motor；
Program in controller comprises the following modules:
(1) parameter setting module: receiving the regular time parameter setting value of T1, T2 and T3, sets work times initial value and mesh
Scale value, setting first pressure P1, second pressure P2, third pressure P3, electric current I and voltage in the 4th pressure P4 and electric motor loop
The respective critical field of U, and each set information is sent to memory module, work times initial value is 0；
(2) detection module: first pressure sensor, second pressure sensor, third pressure sensor and the 4th pressure are received and is passed
The detection information of operating current and operating voltage in sensor and electric motor loop, and each detection information is passed into logic control mould
Block；
(3) timing module: after the start timing signal for receiving Logic control module, accordingly start the timing to T1, T2 and T3
It calculates, timing notifies the signal to Logic control module after；
(4) Logic control module: receiving the detection information of detection module, is issued according to detection information to timing module and is determined accordingly
When enabling signal, control signal is issued after the signal that arrives of timing for receiving timing module return, also judge that first presses
Whether electric current I and voltage U is in respective mark in power P1, second pressure P2, third pressure P3, the 4th pressure P4 and electric motor loop
In quasi- range, if stored in respective critical field, after work times+1 into memory module, and judge after calculating
Whether work times reach target value, enter if not up to and detect work next time, and circulation in this is completed if reaching
The life tests of air pump；If there is beyond critical field where it, then completing the life tests of this inner circulating air pump；
(5) memory module: the work times information in information and Logic control module that storage parameter setting module is sent；
(6) output module: the control signal of Logic control module is exported.
2. inner circulating air described in accordance with the claim 1 pumps life detecting device, it is characterised in that: the program in controller is also
The work times information in each detection information and Logic control module including display module, for showing detection module.
3. inner circulating air pumps life detecting device according to claim 2, it is characterised in that: the standard of first pressure P1
Range is not less than 200psi, and the critical field of second pressure P2 is not less than 200psi, and the critical field of third pressure P3 is
Not less than 175psi, the critical field of the 4th pressure P4 is not less than 175psi；The critical field of electric current I is less than 30A, voltage
The critical field of U is no more than 12V.
4. inner circulating air described in accordance with the claim 3 pumps life detecting device, it is characterised in that: work times target value is
10000。
5. inner circulating air pumps life detecting device according to claim 4, it is characterised in that: the timing of T1 is 5
Second, the timing of T2 is 15 seconds and the timing of T3 is 10 seconds.
6. pumping life detecting device according to any inner circulating air of claim 1 to 5, it is characterised in that: the gas storage
Pressure release electromagnetic valve is additionally provided on tank, the detection signal of monitoring control devices to the 4th pressure sensor controls pressure release when reaching 180psi
Solenoid valve obtain it is electric, lower than 180psi when then control pressure release electromagnetic valve power-off.
7. a kind of inner circulating air pumps life detecting method, inner circulating air pump to be measured have the first gas nozzle, the second gas nozzle and
The motor of pump work is driven, the first solenoid valve is set in the first gas nozzle, second solenoid valve is set in the second gas nozzle, and feature exists
In: the second gas nozzle passes through the air inlet of the first air circuit connection distributing valve, and the gas outlet of distributing valve passes through the second air circuit connection gas storage
Tank, detecting step are as follows:
(1) compressed air is inputted into air accumulator, after the pressure P4 in air accumulator reaches 175psi, carries out following formal inspection
Survey step；
(2) after control motor and second solenoid valve obtain electricity operation time T1, the air outlet valve and air spring valve in distributing valve are controlled
Electricity operation T2, then detect air pressure P1 in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve, in the second gas circuit
The electric current I and voltage U in air pressure P4, electric motor loop in air pressure P3, air accumulator, is then shut off motor, second solenoid valve, outlet
The power supply of valve and air spring valve connects the power supply of the first solenoid valve；
(3) judge air pressure P1 in the first gas circuit, the air pressure P2 of air spring mouth in distributing valve, the air pressure P3 in the second gas circuit,
Electric current I in air pressure P4, electric motor loop and voltage U in air accumulator whether in respective critical field,
If this time working properly, work times+1, judge that the work times after calculating are in respective critical field
No to reach targeted number, if having reached targeted number, the life tests of inner circulating air pump terminate；If not up to mesh
Number is marked, then closes the first solenoid valve after the first solenoid valve obtains electric T3, repeats step (2)~(3)；
If there is in its critical field, then this task is not abnormal, and work times are constant, inner circulating air pump
Life tests terminate.
8. inner circulating air pumps life detecting method according to claim 7, it is characterised in that: in formal detecting step also
Include the steps that controlling air accumulator pressure release, after monitoring that the air pressure P4 in air accumulator reaches 180 psi, then opens and be arranged in gas storage
Pressure release electromagnetic valve on tank then closes pressure release electromagnetic valve after P4 is down to 180psi.
9. inner circulating air pumps life detecting method according to claim 8, it is characterised in that: the standard of first pressure P1
Range is not less than 200psi, and the critical field of second pressure P2 is not less than 200psi, and the critical field of third pressure P3 is
Not less than 175psi, the critical field of the 4th pressure P4 is not less than 175psi；The critical field of electric current I is less than 30A, voltage
The critical field of U is no more than 12V.
10. inner circulating air pumps life detecting method according to claim 9, it is characterised in that: work times target value
Timing for 10000, T1 is 5 seconds, the timing of T2 is 15 seconds and the timing of T3 is 10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910691591.4A CN110374859B (en) | 2019-07-29 | 2019-07-29 | Device and method for detecting service life of internal circulation air pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691591.4A CN110374859B (en) | 2019-07-29 | 2019-07-29 | Device and method for detecting service life of internal circulation air pump |
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| CN110374859A true CN110374859A (en) | 2019-10-25 |
| CN110374859B CN110374859B (en) | 2020-09-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287953A (en) * | 2020-02-24 | 2020-06-16 | 山东泰展机电科技股份有限公司 | Passenger car air pump performance test system and test method |
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